The skins.minerva.content.styles module applies currently applies ul styling to ul.gallery elements resulting in them being off-center due to a 1em left padding, and (on Android) having square list item bullet points. The off-centeredness due to left padding is visible on the mobile web as well.
(examples from Picasso's Blue Period)
Android | Mobile web |
Adding a rule to remove the left padding from ul.gallery elements in galleries.less and importing that file in styles.less fixes the issue.